Fix update bugs

README.md

@@ -17,6 +17,8 @@ $ sudo raspi-config
 - Reboot
 ```
 
+If wifi doesn't work, you're on your own.
+
 For the watchdog to work, we need write access to `/dev/watchdog/`.
 
 Configure `/etc/udev/rules.d/60-watchdog.rules`:
@@ -25,13 +27,20 @@ Configure `/etc/udev/rules.d/60-watchdog.rules`:
 KERNEL=="watchdog", MODE="0666"
 ```
 
+Change the hostname:
+
+```text
+$ sudoedit /etc/hostname
+$ sudoedit /etc/hosts
+```
+
 ### Script
 
 Install dependencies:
 
 ```text
 $ sudo apt update
-$ sudo apt install python3 python3-pip python-virtualenv python3-virtualenv supervisor
+$ sudo apt install python3 python3-pip python-virtualenv python3-virtualenv supervisor python3-rpi.gpio
 ```
 
 **Make sure you have at least Python 3.9 installed.**
@@ -42,7 +51,7 @@ Clone this repo:
 $ cd
 $ git clone https://tanner@git.tannercollin.com/tanner/doorbelldingdongringringdoorbell.git
 $ cd doorbelldingdongringringdoorbell/
-$ virtualenv -p python3 env
+$ virtualenv --system-site-packages -p python3 env
 $ source env/bin/activate
 (env) $ pip install -r requirements.txt
 ```